1) The author explains that Earth’s temperature is rising as a result of human activity, which is known a global warming. The speaker strengthens the point by providing some examples and possible consequences.

************************************************************The author explains why global warming is a serious problem. Likewise, the speaker explains the impact of global warming in the northeastern United States.************************************************************

2) The author points out that human activities increased significantly since the Industrial Revolution and this leads to the increase in Greenhouse gases and these gases hold heat on the atmosphere, which was the main cause of a rise in temperature.

3) For instance, during the twentieth century, the average Earth’s temperature rose 1.5 Fahrenheit, and it is predicted the temperature will rise several more degrees. The rise in Earth’s temperature can have several consequences, such as changes in the weather pattern, ice covers and sea level. Changes in weather patterns may lead to economic losses, especially in the agricultural and transportation sectors.

************************************************************

The authors explains that human activity, such as industry and cutting down forests, has resulted in an artificial increase in greenhouse gases in Earth’s atmosphere, with serious results. Greenhouse gases, such as carbon dioxide, hold heat in the atmosphere and result in rising temperatures on Earth. As average temperatures rise, there are a number of effects. First, scientists predict that weather patterns will change. In addition, snow and ice will melt and sea levels will rise. This can read to flooding, drought, and powerful storms. It can also affect the economy, particularly agriculture and transportation. Economics predict that global warming will lead to a drop in gross national product and consumer consumption in countries around the world.************************************************************

4) The speaker reinforces the point in the passage by providing some factual data. There’s a report stating that in the northern eastern part of America, the months during December to March, the average temperature increased in 2005, and it snowed 9 days less. The less snowfall affects skiing industry because it means less snow and less business days for the industry to make a profit. Also, if the winter gets warmer, the colored leaves in the fall will be less colorful and it will affect less tourists. There’s a prediction that the days of snow will decrease 25 to 50 percent. (234)

************************************************************

The speaker explains the effects of global warming in the northeastern part of the United States. This is a cold and snowy area. Since 1965, temperatures in this region have risen. There are also fewer days with snow on the ground than there used to be. This has had an effect on the economy for people who depend on the ski industry to make a living. The predicted effects of global warming that the author described are already coming true, at least in the northeastern United States.